<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
</head>
<body>
<style>
    .tu{
        width: 100%;
        height: 100px;
        background-image: url("../拓展imgs/12.jpg");
        margin: 0 auto;
        padding-top: 500px;
    }
    .tu-a{
        margin: auto;
        text-align: center;
        line-height: 100px;
    }
    .tu a{
        display: inline-block;
        width: 200px;
        height: 100px;
        background-color: black;
        margin-left: -5px;
        text-decoration: none;
        color: white;
    }
    .tu a:hover{
        transition: all .5s;
        background-color: rgba(0,0,0,50%);
        font-size: 13px;
        font-weight: 900;
    }
</style>

<div class="tu">
    <div class="tu-a">
        <a href="">快递查询</a>
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    </div>
</div>
</body>
</html>